Laser-Assisted Synthesis of Au−Ag Alloy Nanoparticles in Solution
By using laser-induced heating, we prepared Au−Ag nanoalloys via three different procedures: (i) mixture of Au nanoparticles and Ag+ ions irradiated by a 532 nm laser, (ii) mixture of Au and Ag nanoparticles irradiated by a 532 nm laser, and (iii) mixture of Au and Ag nanoparticles irradiated by a...
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| Veröffentlicht in: | The journal of physical chemistry. B 2006-02, Vol.110 (6), p.2549-2554 |
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| container_end_page | 2554 |
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| container_issue | 6 |
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| container_title | The journal of physical chemistry. B |
| container_volume | 110 |
| creator | Peng, Zhangquan Spliethoff, Bernd Tesche, Bernd Walther, Thomas Kleinermanns, Karl |
| description | By using laser-induced heating, we prepared Au−Ag nanoalloys via three different procedures: (i) mixture of Au nanoparticles and Ag+ ions irradiated by a 532 nm laser, (ii) mixture of Au and Ag nanoparticles irradiated by a 532 nm laser, and (iii) mixture of Au and Ag nanoparticles irradiated by a 355 nm laser. Procedure i is advantageous for the production of spherical alloy nanoparticles; in procedures ii and iii, nanoalloys with a sintered structure have been obtained. The morphology of the obtained nanoalloys depends not only on the laser wavelength but also on the concentration of nanoparticles in the initial mixture. When the total concentration of Ag and Au nanoparticles in the mixture is increased, large-scale interlinked networks have been observed upon laser irradiation. It is expected that this selective heating strategy can be extended to prepare other bi- or multi-metallic nanoalloys. |
| doi_str_mv | 10.1021/jp056677w |
| format | Article |
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Procedure i is advantageous for the production of spherical alloy nanoparticles; in procedures ii and iii, nanoalloys with a sintered structure have been obtained. The morphology of the obtained nanoalloys depends not only on the laser wavelength but also on the concentration of nanoparticles in the initial mixture. When the total concentration of Ag and Au nanoparticles in the mixture is increased, large-scale interlinked networks have been observed upon laser irradiation. 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| ispartof | The journal of physical chemistry. B, 2006-02, Vol.110 (6), p.2549-2554 |
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| source | MEDLINE; American Chemical Society Journals |
| subjects | Alloys - chemical synthesis Alloys - chemistry Alloys - radiation effects Gold - chemistry Gold - radiation effects Lasers Metal Nanoparticles - chemistry Metal Nanoparticles - radiation effects Microscopy, Electron, Transmission - methods Particle Size Sensitivity and Specificity Silver - chemistry Silver - radiation effects Solutions - chemistry |
| title | Laser-Assisted Synthesis of Au−Ag Alloy Nanoparticles in Solution |
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